De Boer admitted , against Persija Jakarta team is not optimal because of the weather and the players are still experiencing jet – lag . He also hoped condition Siem de Jong and his colleagues had returned to normal in the face of Persib Bandung .

” On the issue of weather or jet – lag does affect us . We did difficulty developing the game . However , we must overcome it , ” said De Boer .

” If the weather is good in London , then we will try to get more leverage and try to score more goals , ” he added .

The visit to Indonesia is the second experience for Ajax . Previously , they had been diving in a friendly match with Persija Jakarta and Medan PSSI in Region 1 in 1975 .